| Customization: | Available |
|---|---|
| Usage: | Working Earthing, Earthing System, Protection Earthin |
| Working Voltage: | High Voltage |
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JN15-12/31.5 indoor AC high voltage earthing switch is an advanced level product with high-tech parameters performance improved on the basis of ES1 earthing switch. After comprehensive evaluation, it conforms to GB1985 AC HV disconnect switch and earthing switch and IEC129, applies to power system of 3-12kV and three-phase AC 50( 60)Hz. It owns short-circuit making capacity to protect other electric equipment not being damaged. Can be used with various high voltage switchgearalso play a protective role in the high-voltage electrical equipment overhaul.
1.Altitude: ≤1000m
2.Ambient temperature: -10°C ~+40°C
3.Earthquake intensity: ≤8 degree
4.Pollution level: II
5.Relative humidity: Daily averages95%,Monthly average≤90%
| project | unit | parameter | |
| Rated voltage | Kv | 12 | |
| Rated time-to-time withstand current (thermally stable) | KA | 31.5 | |
| Rated short-circuit duration | S | 4 | |
| Rated short-circuit closing current | KA | 80 | |
| Rated peak withstand current (dynamic stability) | KA | 80 | |
| Rated short-time power frequency withstand voltage | KV | Relative and interphased | 42 |
| Rated lightning impulse withstand voltage | KV | Relative and interphased | 75 |
| Mechanical life | times | 2000 | |
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